Paula purchaser borrowed $500 at 12 percent for one year. she paid a $25 processing fee.
the interest paid will be $ ?
thus, the total finance charge (the interest plus the processing fee) will be $ ?
therefore, the apr = total finance charge ÷ amount borrowed = ? %
!

500*0.12=60 interest paid
Total finance charge=60+25=85
APR=85÷500
APR=0.17*100=17%

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.